Listing adding machine



Jan. 21, 1941.

L.. P. CROSMAN LISTING ADDING MACHINE Filed llarch 1, 1940 I] u 4 Sheets-Sheet 1 INVENTOR Dominee, P, C# smal;

Jan. 21, 1941. LP, RCSMAN Y y2,229,553

LISTING `11131111111 111101111111 Filed March 1, 1940 4 Sheets-Sheet 2 l r-n FLY- 2 fag bww.

INVENTOR Jan. 21, 1941. 1 P CROSMAN 2,229,553

LISTING ADDING KACHINE Filed March 1, 1940 4 sheets-sheet s IIIIIII'IIIII'IIII L INVENTOR Jan. 21, 1941. L P. cRosMAN 2,229,553

LISTING ADDING nomma Filed uarcn 1, 1940 4 sheets-sheet 4 INVENTOR l J or'ncmsman Patented Jen. 21, 1941 UNITED STATES PATENT OFFICE LISTING .momo MACHINE Loring Pickering Crosman, Maplewood, N. J., assignor to Monroe Calculating Machine Company, Orange, N. J., a corporation -oi' Dela- WSN The invention has relation to listing adding machines equipped with shiftable platens, tabulating means, and means for automatically controlling the sign character of a registration in alcirdance with the tabulated position of the p a en.

The invention consists in the novel construction and combination of parts. as set forth in the appended claim.

In the accompanying drawings, illustrating the invention,

Fig. 1 is a rear elevation of a machine embodying the invention, with parts broken away and numerous parts removed.

Fig. 2 is a rear elevation of the tabulating means and associated par-ts. "7

Fig. 3 is a left side elevation of the sign con- Y.

' y tent spring 22 will rock lever 20 into the dotted line position, moving al pin 23 of said lever idly trolling mechanism and associated parts. Fig. 4 is a left side elevation of the accumulator adjusting mechanism and associated parts. l

Fig. 5 is a detail left side elevation ofthe align-vr ment feeler, with the related index element;y "spring drum, to move back to the full line posishown in cross section.

sa In these drawings the invention is shown as applied to a listing adding machine constructedv in accordance with the disclosure of U. S. Patent No. 1,946,572, issued February 13, 1934, to Loring Y P. Crosman. 'I'he operation of this machine will -be briefly described, reference being made to the 9 giove named patent for the detailed construcon. The amount to be registered and printed havins been set up in the keyboard of the machine. u and an operating key depressed, a clutch will be engaged, whereby power from anelectric motor I6 (Fig. 1) will be made effective to register the amount in one or more aocumulators and to print Vthe item on a statement sheet supported in the platen carriage. The clutch, having made 40 a single cycle, will be automatically disengaged. this cycle oi' operation an arm |19 (Fig. 2) is reciprocated, first downwardly, allowing a spring latch pawl Il! to move into position above the arm, and thereafter upwardly. a lifting pawl ll! and a trigger I pivotally connected therewith. Thus trigger I will be disengaged from a iixed plate ill and allowed to rock. under the influence of a spring, so that w a shoulder of'said a tabulator detent l, further rocking movement of the trigger operating to disengage the latch |62 from arm` ITI, whereupon the trigger will beretracted, byaspring lfhmgingdetent.

u 'l from the shoulder |63 of a notched tabulator trigger is positioned above bar l, mounted in the framing 3 of the platen carriage.

The platen carriage, being thus freed from the restraint of detent l, near the end of the registering cycle of the machine, will be shifted 5 by means of a tape 9, connected with a spring drum,.until the detent is engaged by the shoulder or wall |'93 of the next adjacent notch of bar I. This engagement serves not lonly to arrest the platen carriage in its next tabular position, but 10 also effects engagement of a clutch whereby the accumulator sign control mechanism is operated. 'I'his is effected as follows:

vDetent 1 is pivotally mounted upon an interm-ediately fulcrumed lever 2li which is normally 15 held by the platen carriage in the fullllne position, Fig. 2. Upon release of detent 1, the depast a click pawl (Fig. 1) 20 YReengagement of detent l with lthe tabulator bar will cause lever 20, under the pull of the tionA of Fig. 2, bringing pin 23 against pawl 25 and thereby rocking a latch 2l, on which said 25 pawl `is mounted, out of engagement with a spring operated lever 36, fulcrumed at 34 on the framing.

Upon operation lever 36 willl engage a pin fixed in a clutch control lever 38, moving the latter about fulcrum 40, out of engagement with the pawl of a spring engaged, one cycle clutch 24, of well known design.

Clutch 24 is adapted to connect the motor 46 witha shaft 56, having fast thereon a crank 35 arm 58 (Figs. 1 and 3). connected by link 61 with a rocker 69, mounted on shaft lll.4 Rocker 68 has spring connections 94 with a series of levers 93, connected each by a link 96 with one end of a whiilletree 86.- 'Ihe other ends of the 40 whimetrees are connected with feelers 83, having reduced free end portions adapted to allow the feelers three positions of adjustment toward the axis of an index tube 62, mounted in the platen carriage, in accordance with the location of a large perforation of said tube, a small perforation or no perforation, in the path of movement of the feeler.

Movement of rocker 69, transmitted from drive w shaft` 66, -will, throughsprings 64 and suitable guide connections between therocker and the levers $3, first move these levers forwardly and the feelers I3 rearwardly until the feelers are stopped in one of three positions by index tube into the path of return movement of a roller 1|,

plates 13, 14'are held in separated position byA spring means, but contact of the lever 93with either plate will swing, it toward the other plate, bringing the outer cam edge of the former plate mounted on the rocker 69.

Cam plates 13, 14 extend between lugs H3, IIS of a gear segment |05, so that the segment will be held in its median position, or will be rocked in one or in the other direction, by the action of roller 1| on the cam plates, in accordance with the indexing of tube 52 in the given position ofthe platen carriage.

The segments |05 engage each with a pinion |33 mounted on a shaft having universal joint connection with the shaft |34 (Fig. 4) supporting an accumulator 16. I

Each accumulator shaft |34 has fast thereon one or more cams |22 adapted each when the shaft is held by segment |05 in a displaced position to cooperate with a related cam formed upon a rocker 4|9, which is reciprocated once during each registering cycle of the ,machine .When a cam |22 lies in the path of movement Near the end of the cycle of clutch 24 the tooth of a disk 55 will be brought into contact with a restoring lever 203, fulcrumed at 40 and having a link connection 204 with lever 35. The action of the toothed disk 55Y will, therefore, restore lever to normal position, where lt will be reengaged by latch 21.

In order to prevent initiation of a registering cycle during the setting of the sign control mechanism, a spring-escapement latch 215.(Fig. 1) is adapted to locate in the path of movement of the registration clutch control lever 251, when said lever is moved into position to reengage the spring pawl |53 of the clutch, and lever 35, in moving to operated position, will raise the escapement latch and-will-in turn lie in the path of movement of lever 201. Restoration of lever 35, upon the completion of the setting operation, will release clutch control lever 201, for response to depression of the operation key.

All of the above described mechanism is tobe found in the disclosure of Patent No. 1,946,572.

Platen carriage location It is -ixnportant-that the platen carriage be accurately located before the feelers 02 are moved towardtheaxisoitheindextlibe32,bothtopre vent distortion of the i'eelersby lateral stresses andtoprevent inconeetsettingofthelilncontrol mechanism, by o! the feel 'wantminaexpeuanonsofthetube A Also, the tabulator bar is made with a plurality of notched flanges and the index tube 82 with a plurality of rows of perforations, the bar and tube being mounted in theframing 3 of the platen carriage so as to be capable of rotary adjustment, to bring any one of several different stop shoulders and .index perforations into active position, according to theiprogramme of operations desired. Patent No. 1,946,572 shows a chain connection between the barv I and the tube 82, but as these machines have been built, the chain is omitted and the two members are separately adjustable, whereby a certain exibility of adjustment is secured. Withthis latter arrangement, however, it is important that every tabulated position of the platen carriage should bring a given group of index perforations opposite the feelers, whichmight not be the case if bar and tube 02 were so relatively adjusted as to provide for in appropriate tabulation. Y.

It is Ithe object ofthe invention. to prevent such erroneous operations.

For this purpose auxiliary index perforations 500 (Figs. 2 and 5) are provided in the tube 82, and an auxiliary feeler 50| is plvoted in the fram'- ing of the machine at 552. A forwad arm of this feeler has a perforation engaged by one .arm of an intermediately fulcrumed lever 503, the opposite arm of which engages a slot formed in lever 36 (Fig. 1).

Therefore, whenever latch 2 1 is tripped by the location of the platen carriage in a new position lever 36, under the iniluence of its spring, will rock feeler 50| toward the axis of tube 02. Since `the index perforations 500 are accurately positloned in relation to the perforations engaged by the feelers 83, it will follow that when the carriage is accurately positioned the feeler 50| will enter the perforation 50|, and the operation will proceed as described above. In case of mislocationlof the platen carriage, however, feeler 50| will travel only a short distance and will be ar.

Inalistingaddingmachinehavingaccum lators and a shiftable platen carriage; the combination. with tabulatint mams for said carriage including a releasable detent, and means settable to' control the sign of a registrationto be eneeted in said secmnuigtprs including a 1evice on said carriage having index configurations feelers' adapted to sense said index conguratio a clutch,- power transmisaion connections between said clutch and said feelers, and a lever operable by the ummm decent to engage 'the clutch; of-

means for insuring .the alignment of the index congurations with the feelers including supple mental index conngurations in saidmdevice, a.V

feeler, and connections between said-feelejp and the clutch lever adapted to prevent engagement 4o! the clutch when the feeler and supplemental index are out of aligned position.

' nomma' momma 

